"9" -in 1,2,3,4

"9" -in 1,2,3,4,5,6,7,8,9

"9" -in 1,2,3,4,5,6,7,8,"9"

9 -notin 1,2,3,4

9 -notin 1,2,3,4,5,6,7,8,9

9 -notin 1,2,3,4,5,6,7,8,"9"